Buckle



FIG. 1 is a top perspective view of the buckle showing the present design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a rear view thereof.

FIG. 5 is a front view thereof.

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The portions of the design shown in broken lines being for the purpose of illustrating environment only and form no part of the claimed design. 

CLAIM The ornamental design for a buckle, as shown and described. 